Valve structure



s.- E. DERBY. VALVE STRUCTURE.

APPLICATION FILED JUNEH, 1919.

1,400,424; Patented Dec. 13, 1921.

2 SHEETS--SHEET WW% a BY JQM ATTORNEY.

S. E. DERBY.

VALVE STRUCTURE.

APPLICATION FILED JUN'E 111 I919.

' Patented Dec. 13, 21.

2 SHEETS-SH I N VEN TOR.

UNITED STATES PATENT OFFICE.

SAMUEL EENEST DERBY, 0F PHILADELPHIA, PENNSYLVANIA,.ASSIGNOR TO SCHUTTE& KOERTING COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A

CORPORATION OF PENNSYLVANIA.

VALVE srrnuoronn.

Application filed June 11,

To all whom it may concern:

Be it known that I, SAMUEL ERNEST Danny, a citizen of the United Statesof America, residing in the city and county of Philadelphia, in theState of Pennsylvania, have invented certain new and useful Improvementsin Valve Structures, .of which' the following is a true and exactdescription, reference being had to the accompanying drawings, whichform a part thereof;

My invention relates to an improved valve structure and in its broaderfeatures has for its object to provide a valve structure designed toperform the functions of the ordinary three-way valves, but withprovisions for larger port openings, greater ease and quickness ofoperation, and less tendency to leakage than is ordinarily procurable byconstructions in use.

The nature of my improvements will be best understood as described inconnection with the drawings in whichfl igure 1 is a front elevationthrough a duplex strainer construction provided with my improved valvestructure, said elevation being partly in section on the line l-l of Hi2.

Fig. 2 is a plan view of the structure shown in Fig. 1.

Fig. 3 is a side elevation of the valve chamber with the strainerchamber on the right hand side of Fig. 1 removed.

Fig. 4-. is a central sectional view of one of the double valvesemployed in my valve structure, and

Fig. is a plan View 'of one of the cams used in actuating the valves.

A is a chamber casing having an open port A, through which fluid canflow into the chamber. The casing is divided into an upper and lowerchamber by the partition A and the lower chamber is provided with a portA for the outflow of fluid. Thepartition A is formed, as shown, with acentral perforation A which will fit tightly and serve as a bearing forthe valve shaft to be described. A and A are ports leading from theupper chamber of the casing, each terminating within the casing in valveseats a and a. A and A are similar ports leading into the lower chamberof the casing and formed with valve seats a and a The valve seats a anda are directly opposite to and parallel with each other andSpecification of Letters Patent.

1919. Serial No. 303,350.

with the center line of the casing, and this is also the case withregard to the seats a and a B is a head closing the top of the chamberA; it is formed with a central perforation for the valve actuating shaftand with packing chamber B in connection with which works a gland C. Thehead, as shown, is also formed with upwardly projecting ears B B inwhich are formed the outwardly opening slots 6 D is the head closing thelower part of the chamber casing' formed with a central socket D for thelower end of the valve actuating shaft. E andE are valves adapted toseat themselves on the valve seats a a or (H, a the valves beingopposite and parallel to each other and held in rigid relation to eachother by the connecting barsE-fi E On the back of each valve is a camcontactin surface indicatedat The valves are held. in alinement with thevalve seats by pins F, F secured to the face of each valve, and eachworking in a spider indicated at G. H is the valve actuating shaft whichextends through the central perforation in the head 13 and is centeredin the socket D of the lower head I). As shown, the shaft H is providedwith an adjustable collar I which fits against the lower side of thehead B, and is also provided with sleeves I" and P, the first of whichrests on the partition A and the latter of which rests on the head D,and which serve to support and properly aline the cams indicated at L, LJ is a lever secured to the top of the shaft H and having pivotallyattached to it a bolt K in alinement with the slots 6 on the ears B Kindicating a thumb nut on the end of the bolt K. L, L are cams securedon the shaft H and in contact with the cam abutments E of the oppositelydisposed valves.

M and M are strainer casings secured on opposite sides of the chamber Aand formed with ports I. 2 and M which register with the upper and lowerports leading from and to the casing A. These strainer casings are, asshown, formed with shoulders M to sup port the strainer. N, N are headsfor closing the top of the chambers M and M, and, as shown, held inplace by a claw N, the ends of which fit into ears on each side of thecasing, and which are provided with screws N which bear down on theheads and hold them in place. 0 indicates the strainer,

Patented Dec. 13, 1921.

which, as shown, is made up of two concentric perforated cylinders ofmetal indicated at O and Q The strainer is provided with an annularflange O which rests on the shoulder M, and the concentric shoulders aresecured together at bottom by the annular plate (J and the innercylinder closed at top by the circular plate 0 0 indicates a rodextending up from the plate 0 which can abut, or approximately abut,against the head N, and which serves as 'a convenient handle forremoving and 7 replacing the strainer in the casing. v

While my valve structure is well adapted for use in a duplex strainer ofthe construction shown it is also adapted for many other uses and thestrainer attachments form no essential part of my invention. Inoperation, the parts being in the position shown In Fig. 1, fluid entersthe upper chamber of the casingA through the port A, and passes fromthis chamber through the port A into the strainer casing at the righthand side, and thence passes through the port A into the lower chamberof the casing A and thence through the open port A When it is desired toshift the flow of fluid through the port A and back through the portA?the shaft H is turned through the handle J. The cams L, L acting on thecam contacting surfaces of the valves E and E carries the valve Eaway'from its seat a and places the valve E against its seat a, closingthe ports A and A and opening the ports A and A", and as a means forholding the valves tightly against their seats I provide the swing boltK which is swung into one of the slotted ears B and clamped intoposition by the thumb nut'K'.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent, is: f

a 1. In combination with two chambers, one having an inlet and the otheran outlet pashaving an inlet and the other an outlet pas sage forfluids, and each chamber having in addition oppositely disposed portedvalve seats, valves located in each chamber for coacting with said valveseats, each pair of valves being secured together so as to movesimultaneously to close one and open the other valve seat, means forsupporting said valves in alinement with the valve seats, a rotatableshaft extending through the two chambers of thecasing and means actuatedby said shaft for simultaneously actuating the two pairs of connectedvalves in the same direction.

3. In combination with two chambers, one having an inlet and the otheran outlet passagev for fluids, and each chamber having in additionoppositely disposed ported valve seats, valves located in each chamberfor coacting with said valve seats, each pair of valves being securedtogether so as to move simultaneously to close one and open the othervalve seat, means for supporting said valves in alinement with the valveseats, a rotatable shaft extending through the two chambersof the casingand cams attached to said shaft for simultaneously actuating the twopairs of connected valves in the same direction. 1 i

V SAMUEL ERNEST DERBY.

